Engine-governor.



NO- 827,727- PATBNTED AUG. 7, 1906.

E HILL ENGINE GOVERNOR.

APPLICATION FILED FBB.17.1906.

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ENGINE-GOVERNOR.

Specication of Letters Patent.

Patented Aug. 7l, 1 906.

Aup'lication filed February 17.1906. Serial No. 301,581.

T0 all when?, t may concern:

Be it known that I, EBENEZER HILL, a citizen of the United States, residing at Norwalk, in the county of Fairfield and State of Connecticut, have invented a new and useful Engine-Governor, of which the following is a specification.

Reciprocating steam-engines which have light fly-wheels are liable to jump at each half-stroke or half-revolution, This jump affects the governor and causes the balls to fall and rise, and as it occurs immediately after the slowing of the fly-wheel the increase of steam and cutting off of steam generally comes at that instant after its need, so that this action of the governor upon the engine with a light fly-wheel often accentuates rather than controls the jumping. To prevent this surging of the governor, dash-pots have been connected with the head or spindle in such manner as to offer resistance and prevent a quick and violent movement of the governor.

The invention relates to a governor which is constructed so as to eliminate this surging when the engine jumps.

This object of-the invention is to so arrange the parts that the governor is not affected by any jumping of the engine, but will run ata uniform speed regardless of temporary fiuctuations of the engine.

Ordinarily if the speed of an engine with a light fiy-wheel is momentarily and slightly checked the effect is to retard the pulley which is located on the governor-shaft, and if the shaft and pulley are keyed rigidly the rotation of the governor would be retarded and the balls would quickly drop and open the valve, so that an unnecessary amount of steam would be admitted to the engine at the wrong time. Oftentimes if the governor is driven by a belt and pulley when an engine is momentarily and slightly checked-for instance, by reason of throwing on the load of a heavy machine-and the governor continues in its motion the tension on the governorbelt is reversed and the slack side is drawn up so as to ride over the iianges of the pulley and be thrown off, thus putting the governor out of action and causing a disastrous runaway. With this invention when the pulley is momentarily retarded by any erratic action ofthe engine the governor runs forwardly, so as not to take account of slight instantaneous changes, and is picked up by the pulley when the engine in the next moment regains its normal speed. n

Figure 1 of the accompanying drawings, by which the invention is illustrated, shows a side elevation of a steam-valve provided with a governor constructed to act in the manner above outlined. Fig. 2 shows a transverse section of the governor-driving pulley on the plane indicated by the line 2 2 on Fig. 1. l

The body 1 of the valve is constructed 1n the usual manner and is provided with cornmon ports and valve-disks. The spindle 21s raised and lowered by the levers 3, which are supported by the head 4 and are provided with weights 5, which inthe form shown besides being drawn down by gravity are connected by a spring 6, arranged to facilitate the opening of the valve. The head, with the levers and weights, is rotated by the gear 7, which is engaged by the gear 8 on the inner end of the driving-shaft 9.

On the outer end of the shaft is the driv ing-pulley 10. Of course instead of a pulley this could be a gear, sprocket-wheel, or friction-drum, as desired. This pulley is connected with the shaft by means of a ratchetclutch, so that when the pulley is rotated in one direction it drives the shaft and causes the head, with the levers and weights, to be revolved. In the form of the invention shown this ratchet-clutch has a collar 11, located in the hub of the pulley and keyed and pinned fast to the shaft. This collar has peripheral pockets 12, in which are located rollers 13. These pockets are so arranged that when the pulley is rotated in one direction the friction of the inner wall of the hub of the pulley will rotate the rolls in such manner that they will bind the hub of the pulley and the collar together; but if the movement of the pulley is retarded the balls will roll back into the pockets and release the collar and allow the shaft to run faster than the pulley.

If desired, the ratchet-clutch between the shaft and pulley could be constructed as a common ratchet and pawl instead of ratchet and rolls without departing from the invention. When the bushing 14 is fastened in the pulley-hub by the screw 15, the rollercollar will retain the pulley in position on the spindle.

With this construction the governor will be driven by the forward rotation of the pulley,

IOO

which is designed ito be belted `to the part of the engine to' be controlled. Should the speed of the engine rbe reduced for an instant, and consequently the rotation of the pulley be temporarily checked, the governor :will continue rotating at its normal speed, so that the balls Will not drop and open the valve and admit more steam. Then when the engine recovers its speed and the pulley rotates normally it picks up the governor-driving shaft and'causes the governor tooperate as usual. Thus the governor lruns uniformly and is ynot affected fby slight jumps of -the engine; but ofcourse it isa'flected byany steady increase ordecreajse in #the irate of speedof .the engine Which lit is designed fto control.

The invention y'claimed 'isil. Theicombination in an engine-.governor of ra driving-shaft, 4a vrotatable driving-body on the shaft, and a ratchet-clutch located between lthe driving-body and the drivingshaft, substantially as specified.

2. The combination "With an yengine-governor of a driving-shaft, a rotatabledrivnge body on the shaft, and a roller ratchete clutch located between the driving-body and the driving-shaft, substantially as specified.

3. The combination in an engine-go vernor of a driving-shaft, a rotatable driving-body on the shaft, and a roller ratchet-clutch located inthe hub of the driving-'body and arranged to .hold the driving-body in position and to connect it With the driving-shaft, substantially as specified.

4. The combination inan engine-go vernor of a 'driving-shaft, a `rotatable driving-'body on the shaft, a roller ratchet-clutch `'located in thefhu'b'of the'driving-body and connected With the driving-shaft, and a vbushing yarranged in the hub of the driving-body and holding 'the driving-body and the -clutch together, substantially as specified.

VEBEYEZER HILL.

Witnesses:

E. HILL, Jr., H. H. MossMAN. 

